Chapter X Other international agreements and the internal law of the parties Article 27 Other international agreements or arrangements 1. In their mutual relations, Parties which are members of the European Economic Community shall apply Community rules and shall not therefore apply the rules arising from this Convention except in so far as there is no Community rule governing the particular subject concerned. 2. Nothing in this Convention shall prevent the Parties from concluding international agreements completing or developing its provisions or extending their field of application. 3. In the case of bilateral agreements, this Convention shall not alter the rights and obligations of Parties which arise from such agreements and which do not affect the enjoyment of other Parties of their rights or the performance of their obligations under this Convention. Article 28 Relations between the Convention and the internal law Of the Parties Nothing in this Convention shall prevent the Parties from applying stricter or more detailed rules than those provided for in this Convention to programme services transmitted by entities or by technical means within their jurisdiction, within the meaning of Article 3.